ML20062D514
| ML20062D514 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 07/08/1982 |
| From: | Doyel C, Green W, Murray T TOLEDO EDISON CO. |
| To: | |
| Shared Package | |
| ML20062D475 | List: |
| References | |
| AD-1827.12-02, AD-1827.12-2, NUDOCS 8208060109 | |
| Download: ML20062D514 (17) | |
Text
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THE TOLEDO EDISON COMPANY
~1 DAVIS-BESSE NUCLEAR POWER STATION j/
EMERGENCY PLAN SUPPORTING PROCEDURES REVISION INDEX O
b
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PAGE REVISION PROCEDURES REVISION TEMPORARY MODIFI~.TIONS
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5 HP 1602.01 10 T-6393 r]
HP 1604.01 2
'3 AD 1827.01 3
AD 1827.02 8
AD 1827.03 1
AD 1827.04 1
T-6019 AD 1827.05 2
AD 1827.06 2
l AD 1827.07 2
La AD 1827.08 1
AD 1827.09 1
n AD 1827.10 12-
"i AD 1827.11 2
AD 1827.12 8
AD 1827.13 4
q 4
AD 1827.14 1
J AD 1827.15 3,
r AD 1827.16 1
~~
2 AD 1827.17.
1 L ~./
AD 1850.04l 4
AD 1850.05 5
m l
ADMINISTRATIVE MEMORANDUMS REVISION
(.
No. 37 - ECS Pager and Telephone Numbers 26 No. 38 - First Aid Team 11 i
i No. 39 - Fire Brigade 12 No. 41 - Emergency Duty Officer (EDO) 24 No. 42 - Radiation Monitoring Teams (RMT) 16 u
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Revision ~145 5,
July, 1982
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8208060109 820002
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Unit No. 1 i
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Administrative Procedure AD 182'T.12 la
,7 Protective Action Guidelines y
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5 J
Record of Approval and Changes 9
i Prepared by C. Doyel/W. Green 2/23/76 Date f]d Submitted by E. Ld.
3 / ) 1 / ~/ 4.
2.on llaad Date
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Recommended by SRB Chairman bate
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Ma ger uality/ fsurance Date A
Approved by
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~ YaYion Superintendent Date Revision SRB QA
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No.
Re c= men en Date Approved Date Approve Date lg lEd b "# # " m " '"l QlJ b f ^I ~ fo M 7i p
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AD 1827.12.6 7
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1.
PURPOSE N
i
[f To define a specific set of guidelines to be followed in determin-
[' j ing protective actions to be taken in the event of emergencies involving radioactivity releases at the Davis-Besse Nuclear Power Station (DBNPS).
t-2.
REFERENCES I
2.1 10 CFR 20, Standards for Protection Against Radiation 2.2 10 CFR 100, Reactor Site Criteria 1
j}
6 2.3 USAEC TID-14844, Calculation of Distance Factors for Power and Test Reactor Sites 2.4 AD 1808.00, Industrial Security Plan 2.5 Davis-Besse Nuclear Power Station Emergency Plan i
2.6 AD 1827.10, Emergency Off-Site Dose Estimates fl 2.7 SAND 77-1725, Public Protection Strategies for Potential tj Nuclear Reactor Accidents - Sheltering Concepts with Existing Public and Private Structures 28 EPA Guidelines - September 1975, EPA-520/1-75-001 2.9 U.S. Food and Drug Administration, Federal Register, Vol.
43, No. 242, Dec. 15, 1978
,a 2.10 Reg Guide 1.109, Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the purpose of Evaluating Compliance with 10 CFR Part 50 Appendix I 3.
DEFINITIONS 6
3.1 Decision Dose r
That value of projected thyroid dose above which evacua-tion is beneficial.
+
3.2 Evacuation Dose That dose that a potenLial evacuee would re'ceive if he were openly exposed during the evacuation.
3.3 Evacuation Exposure Period The period during which the evacuee is exposed to the J-radioactive plume.
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3.4 Off-Site g)
The area outside the Owner Controlled Area as defined in AD 1808.00, Industrial Security Plan.
3.5 Projected Exposure Time
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That period of time in which the population surrounding DBNPS will be exposed to radiation as a result of an E
accidental airborne radioactive release. Projected b
Exposure Time starts when the airborne radioactivity released crosses the Owner Controlled Area Boundary and g
ends when radiation levels off-site return to normal.
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3.6 Sheltering Dose p
R That' dose that an individual would receive if he were to remain within a shelter having ventilation control during the passage of the plume. The method of calculating the
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sheltering dose is significantly different for the whole e
body and thyroid dose. This is because a ventilation controlled shelter, i.e. door, windows and ventilation -
.g shut, provides thyroid protection for only two hours.
O (h.,
Aftei two hours the inhabitant receives the full thyroid dose. For t'he whole body exposure there is no limit on y
the resident's time in the shelter.
w le.
RESPONSIBILITIES F
4.1 In the event an emergency is declared at DBNPS that
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involves the release of radioactivity or radiation, the i
Emergency Duty Officer (EDO) and his assisting personnel n
shall_use the calculating methods found in AD 1827.10, N
~
Emergency Off-Site Dose Estimates, to calculate the instantaneous radiation exposure rates for various offsite locations.
(In the event of an emergency during off-normal
/r L
hours,:this calculation is the responsibility of the Shift Supervisor while acting as EDO until such time as he is relieved by the EDO.)
E
?L The results of these calculations should be utilized as specified in Section 6. for evacuation and shelter recom-
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mendations, and compared with the guidelines given in b
~
j Sections 5. and 7. to determine the proper protective actions required to protect the health and safety of j
7 Station personnel and the general public. However, in the event that time does not permit the use of the Section 6
'i Data Sheets (i.e., if the plume is moving relatively fast towards the public and especially large population centers),
j protective actions should be based on an immediate com-
,,y lM) 1 parison of the dose project' ions calculated in AD 1827.10 with the criteria given in Section 5.1 of this procedure.
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AD 1827.12.7
-J/I l The EDO shall then implement those actions for Station l
personnel and communicate the recommended off-site actions 1
I; to the Ottawa County Sheriff's Department (or the State Lj and County Emergency Operations Centerr if they have been activated).
1
__ )
4.2 In order to simplif'y evacuation instructions for the public, evacuation " subareas" (see Figure 1) have been established by municipal and geographical boundaries.
When making evacuation decisions in an emergency situa-J tion, the EDO shall consider the time available (based on plume travel speed) to evacuate the affected subarea (s),
in comparison to the estimated evacuation times as given
_J in Table 1.
The data sheets used in Section 6. assist in this process.
,v
'l S.
PROTECTIVE ACTION GUIDELINES t
7 5.1 Recommended Protective Actions for the Plume Exposure i
Pathway (10 mile) Emergency Planning Zone to avoid whole J
body and thyroid dose from exposure to a gaseous plume:
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b Projected Dose (Rem) to the Popu'lation Recommended Actions (*
Comments r"
Whole body
<1
, ['i Noplanngg) protective Previously actions.
Issue an recommended Thyroid
<5' advisory to seek protective
!e shelter and await actions may i "q further instructions.
be recon-I Monitor environmental sidered or radiatica levels.
terminated.
Whole body L to
<5 Seek shelter as a min-If con-t imum.
Consider evacu-straints ation. Evacuate unless exists, Thyroid 5 to <25 constraints make it special l,j impractical. Monitor considera-l environmental radia-should be tion levels.
Control given for a
1 access.
evacuation of children l
and preg-nant women.
Whole body 5 and above Conduct mandatory Seeking w
evacuation. Monitor shelter P
environmental radia-would be an
,a Thyroid 25 and above tion levels and adjust alternative area for mandatory if evacua-evacuation based on tion were these levels.
not immedi-Control access.
ately pos-sible.
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AD 182.7.12.7 p
(*)
These actions are recommended for planning purposes.
Protective action decisions at the time of the n
incident must take existing conditions into con-f, siderction.
H (b)
At the time of the incident, officials may implement g
low-impact protection actions in keeping with the a
principle of maintaining radiation exposures as low as reasonably achievable.
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12 5.2 Guidelines for protection against ingestion of contamina-7 tion for the Ingestion Exposure Pathway (50 mile) Emergency Planning Zone:
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7 I.
Ground Contaminatior.
-Q A.
Action Levels b
- 1. Projected w ole body dose above the ground 2 rem
]d i
- 2. Ground Contactination levels 22000 pCi/m2 g,
H t = 1 hr post-accident
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- 3. Exposure rate 212 mR/Hr-at 1 meter above i
l ground at t = 1 hr post-accident fD b3 B.
Recommende.d Protective Actions k
l
- 1. Evacuation of affected areas p
- 2. Restriction of entry to contaminated off-site i
areas until radiation levil has decreased to n
State approved levels 1
Q II.
Food and Water Contamination 5
4 p
j A *. Action Levels i
Concentration in f
Milk or Water i
(0.5 (5
]
i or bone:
or bone:
Total Intake 1.5 rem 15 rem via all Pasture i
thyroid). thyroid)
Food & Water Grass i
Preventive Emergency Pathways (Fresh Weight _)
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I Level Levei Preventive Laergency Preventive Emergency C
Nuclide*
(pCi/1)
(pCi/1)
(pCi)
(pci)-
(pCi/kg)
(mci /kg) 1-131 C
(thyroid) 0.012 0.12 0.09 0.9 0.27 2.7 gw '
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If other nuclides are present, Reg. Guide 1.109 will be used to 3
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AD 1827.12.7
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calculate the dose to the critical organ (s).
Infants are the critical segment of the population m
!j Concentration in Milk or Water 1
(0.5 (5
or bone:
' Total Intake 1.5 rem 15 rem via all Pasture l
thyroid) thyroid)
Food & Water Grass Preventive Emergency Pathways (Fresh Weight)
Level Level Preventive Emergency Preventive Emergency Nuclide*
(pCi/1)
(pCi/1)
(pCi)
(pCi)
(pCi/kg)
(pCi[kgl Cs-137 (Whole i;
Body) 0.34 3.4 7.0 70 3.5 35
.t Sr-90 (bone) 0.007 0.08 0.2 2.0 0.7 7.0 Sr-89 j
(bone) 0.13 1.3 2.6 26 13 130 B.
Recommended Protective Action.
Proventive Emergency
- 1. Removal of lactating Isolate food and water gf.
dairy cows from con-from its introduction taminated pasture and into commerce after substitution of uncon-considering:
taminated stored feed.
- 2. Substitute source of
- a. availability of uncontaminated water.
other possible
_i
- 3. Withhold contaminated actions; milk from market to
- b. importance of par-allow radioactive decay.
. ticular food in
- 4. Divert fluid milk to nutrition; L,
production of dry whole
- c. time and effort to milk, butter, etc.
take action;
- d. availability of other foods.
7 5.3 Representative shielding factors from airborne radio-nuclides:
Shielding [,) Representative Range Structure or Location Factor Outside 1.0 Vehicles 1.0 v
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Wood-frame house (b) 0.9
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j (no basement) 3 w.
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AD 1827.12.7 p
,m)d Shielding (,) Representative Range
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r Structure or Location Factor Basement of wood house 0.6 0.1 to 0.7(*)
c Masonry House (no base-0.6 0.4 to 0.7(c)
Ua ment)
Basement of masonry house 0.4 0.1 to 0.5(c) f4d Large office or indus-0.2 0.1 to 0.3(c, d) trial building 4
(a)
The radio of the dose received inside the structure y
to the dose that would be received outside the N
structure.
O i
(b)
A wood frame house with brick or stone veneer is F
approximately equivalent to a masonry house for shield-E ing purposes.
(*)
R This range is mainly due to different wall materials b"
and different geometries.
(d)
The shielding factor depends on where the personnel
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are located within the building (e.g., the basement or an inside room).
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7 5.4 Representative shielding factors for surface deposited h
l radionuclides:
n jf; Shielding Factor [,) Representative Representative Structure or Location Range I m above an infinite 1.00 b!
smooth surface L-1 m above ordinary ground 0.70 0.47-0.85
[]
U 1 m above center of 50-ft 0.55 0.4-0.6 i
roadways, 50% decontam-p!
inated c
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i Cars on 50-ft road:
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Road fully contaminated 0.5 0.4-0.7 l
Road 50% decontaminated 0.5 0.4-0.6 o
Road fully decontaminated 0.25 0.2-0.5 9
Trains 0.40 0.3-0.5
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AD 1827.12.7 1
C-Representative Shieldina Factor [,) Representative
. ri Structure or Location Ranae One and two-story wood-0.4(b) 0.2-0.5 l,
frame house (no basement) i<l
!u One and two-story block 0.2(b) 0.04-0.40 l
and brick house (no base-
- p ment)
.,a House basement, one or two 0.1( )
0.03-0.15 j,
walls fully exposed:
- j One story, less than 2 0.05(b) 0.03-0.7 ft of basement, walls exposed j [.
Two. stories, less than 2 0.03(b) 0.02-0.05
!u ft of basement, walls exposed
- p Three-or four-story I
structures, 5000 to l^
10,000 ft per floor:
2 C.05((b) b)
First and second floors:
0.01-0.08 l l.
Basement 0.0) 0.001-0.07 Miltistory structures, I
>10,000 ft per floor:
2 Upper floors 0.01(b) u -
0.001-0.02 Basement 0.005(b) 0.001-0.015 3,i (a)
)
4;,a The ratio of dose received'inside the structure to the dose that would be received outside the structure.
j.
(b) 1 [a.
Away from doors and windows.
i 7
5.5 Distribution of Potassium Iodide Tablets 1.
The EDO will direct Station personnel to take a KI tabletif,(a}5the known iodine concentration will exceed 1 x 10 pCi/cc for greater than one hour, or (b) the total known dose to an adult thyroid will exceed 10 rems.
5 2.
Base the distribution of KI on actual thyroid doses, 4
not projected doses.
KI is 90% effective if admin-intered within one hour after the uptake, and 50%
i effective if administered within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> after j
- uptake, j; rj 3.
Call Radiation Management Corporation if KI is administered for further directions regarding usage.
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AD 1827.12.7 6.
PROCEDUkE 6.1 Whole Body Dose
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Complete Data Sheet 1.
7 6.2 Thyroid Dose
'a Coa.plete Data Sheet 2.
g 6.3 Protective actions should be recommended as developed by Data Sheet I and 2.
Additional guidance is as follows:
p EXAMPLES OF ACTIONS ACCIDENT PHASE EXPOSURE PATHWAYS TO BE RECOMMENDED Inhalation of Evacuation, shelter,
[
EMERGENCY gases, radio-access control, res-G PHASE 1 iodine, or par piratory protection, (0.5 to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />)* ticulate prophylaxis (thyroid
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protection)
Direct whole body Evacuation, shelter, exposure access control Ingestion of Take cows off pas-g milk ture, prevent cows from drinking sur-
/]L face water, discard G
contaminated milk, or divert to stored products such as f
cheese d
INTERMEDIATE Ingestion of Wash all produce, or PHASE 2 fruits and impound produce, n
vegetables delay harvest until le
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approved, substitute uncontaminated pro-duce Ingestion of Cut off contaminated a
water supplies, substitute from other sources, filter, demineralize (24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to Whole body expo-Relocation, decon-30 days)*
sure and inhala-tamination, fixing c
tion of contamination,
[
deep plowing 1
Emergency phase - Time period of major. release and
[5 subsequent plume exposure.
G Intermediate phase - Time period' of moderate con-g 2
tinuous release with plume g
exposure and contamination of Q
j environment.
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AD 1827.12.7 L.-
EXAMPLES OF ACTIONS ACCIDENT PHASE EXPOSURE PATHWAYS TO BE RECOMMENDED r
Ingestion of food Decontamination, and water con-condemnation, or taminated from destruction of food; LONG TERM the soil either deep plowing, con-PHASE 3 by resuspension demnation, or al-or uptake ternate use of land through roots Whole body expo-Relocation, access sure from deposi-control, decontam-1 (over 30 days)*
tion material or ination, fixing of inhalation of re-contamination, deep suspended plowing material 4,
8
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Long Term Phase - Recovery period.
' i
" Typical" Post-accident time periods.
a 6.4 Small Children and Pregnant Women
'~I 7
L, Any time the projected whole body does is expected to exceed 500 mrem or the projected thyroid dose is expected to exceed 1.5 rem, advise the Ottawa County Sheriff's Department to conduct an evacuation in the area of exposure 4
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of families in "which there are pregnant women or small children.
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DATA SHEET 1 Evacuation vs Shelter Decision Guide q
For Whole Body Exposure g
1.
Evacuation Subacea from Figure 1
,,,y 2.
Approximate Distance to Population.of Interest k
(1, 2, 5, or 10 miles) miles Il 7
NOTE:
Use the distance in which the projected exposure levels s'
calculated in AD 1827.10 are above the Protective Action Guidelines given in Section 5.1.
A data sheet should be m
calculated for each affected radii.
3.
Calculate Whole Body Dose Rate:
3 E
(D=MR/HR from' Step 14, Data Sheet 1 of AD 1827.10, b
i Emergency Off-site Dose Rate Estimate)=
mR/HR I
E 4.
Release DuraLion (If not known assume 10 hrs.)
hours L
5.
Projected dose = dose rate x duration = Items 3 x 4 =
[q 1000 1000 6.
Wind Speed
_ MPH Distance (item 2) 7 7.
Plume Travel Time = Wind Speed (item 6) =
hours 8.
Time since, or till, beginning of release.
1 l
j a.
If release has begun:
p Release has been in progress hours f
l b.
If release will begin later:
l Release will start in hours 9.
Time till exposure begins:
5 a.
If release has begun:
Time = Item 7 - Item 8a =
hours 7
NOTE:
Show minus sign in answer if g
b Item 8a is greater than Item 7.
u h
c b.
If release will begin later:
'O l:
Time = Item 7 + Item 8b.,=
hours 1.
l 10.
Evacuation Weather Conditions:
E L
m.L Normal Adverse Severe (Circle One)
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l 11 AD 1827.12.7 l t,/~
DATA SHEET 1 (Continued) 11.
Use information from Items 1 and 10 to get Estimated Evacuation Time from Table 1.
hours y
12.
Exposure Time:
Item 11 - Item 9 =
hours
.c NOTE:
If Item 9 is negative, keep in mind that minus a negative
~,
number gives a positive result.
If Item 9 is larger than Item 11, enter zero hours.
13.
Evacuation Exposure Period (EEP):
Take the smaller of Exposure Time (Item 12) or
~.
Release Duration (Item 4) hours j
7 14.
Evacu'ation Dose = EEP hours x Dose Rate = (Item 13) x (Item 3) =
2' REM 1000 1000 15.
Sheltering Dose =
Projected Dose x Structure Shielding Factor (from a
5.3) =
%:gU4
- a=qi N 7
NOTE:
Since the housing in the 10 mile Emergency Planning Zone
.j ig y ypfp ~.,j is basically wood homes, a structure shielding factor of
- A i
?t 0.9 should normally be used.
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16.
Using the above information and following table, 7'S
determine the protective actions to be recommended:
i j
_IF_
THEN Projected Dose (Item 5) less than a.
NO ACTION a.
1 rem 7
b.
Sheltering Dose (Item 16) is greater b.
SHELTER than 1 rem but less than 5 rem c.
Sheltering Dose greater than 5 c.
EVACUATE rem, and Evacuation Dose (Item
- 15) less than Sheltering Dose d.
Sheltering Dose greater than 5 rem d.
SHELTER and Evacuation Dose greater than or equal to Shelter Dose j
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EVACUATION TIME ESTDfATE l
SECTORS N
h,.,f FIGURE 1 70'8 @
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h S-1952,
0-s=6 r - * -se et t c -
KEY:
l S-0 P-Permanent Residents T-7475 d
S-Seasonal Residents
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T-Transients g
P-877 S-239 T-1575 c-----
e m ott tie.
l P-1516 i
[,,,,j sattu ter.
S-1828 r--,l!!noa nocu niest 1
T-1570 tait s
l
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p.4934 yh S-0 P-1815 T-0 S-0 T-70 Ituoatx.
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h' m : 2 m n z: 1 mN%= r WWw:n c=n mk _pa '-
L; 13 AD 1827.12.8 7,
TABLE 1 Evacuation Time Estimates
,_i Land Sub-Areas Population
- Normal Adverse Severe **
In[,
1 2,781 2 hr. 55 min.
829 4 hr. 10 min.
r1 829 15-20 hr.
2 2
2,681 3 hr. 5 min.
877 4 hr. 50 min.
877 30-40 hr.
3 10,706 3 hr. 35 min.
"1 3,231 6 hr. 30 min.
j 3,231 35-45 hr.
t 4
608 2 hr. 50 min.
608 4 hr. 15 min.
608 10-15 br.
8 5
4,934 3 hr. 30 min.
LJ 4,934 4 hr. 30 min.
4,934 40-45 hr.
p (7-(g,'
6 4,916 3 hr. 30 min.
1,518 5 hr. 10 min.
1,518 30-40 hr.
7 1,885 4 hr.
1,815 6 br. 25 min.
1,815 50-60 hr.
TOTAL EPZ 28,511 5 br. 15 min.
13,812 10 hr. 55 min.
13,812 75-100 hr.
Lake Sub-Areas Boaters No rmal Adverse Severe 8 thru 13 Varies 4 hr.
N/A N/A Special J
Case Population Normal Adverse Severe Port Clinton 10,328 4 hr. 45 min.
~
8 7,223 6 hr.
7,223 24-30 hr.
- Population varies due to location and transient resident variations due to season and unfavorable weather conditions.
s
- Time ranges are provided due to the uncertain nature of severe weather
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conditions (e.g., during a severe snow fall or blizzard, the time it takes to evacuate can vary depending on the direction and spe,td of the wind).
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14 AD 1827.12.7
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DATA SHEET 2 Evacu, tion vs Shelter Decision Guide For Thyroid Dose I
w 1.
Evacuation subarea from Figure 1 i~
2.
Complete Data Sheet 1 L
3.
Release Duration from Data Sheet 1, Ites 4
[
(If not known assume 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br />) hours L
4.
Evacuation Exposure Period (EEP) from Data g
Sheet 1, Item 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br /> Ii 7
5.
Calculated Thyroid Dose Rate (Step 12, Data mR/HR Adult Sheet 2, AD 1827.10) mR/HR Child Cl
~
6.
Projected Thyroid Dose = Item 3 x Item 5 =
1000 REM Adult I
REM Child E
7.
Decision Dose is that value of Projected Thyroid Dose above which evacuation is beneficial. The 7;
Decision Dose depends on the Release Duration as 6
follows:
Release Duration Decision Dose
! s. -'
e (hours)
(rem)
UU 2
75
[d 3
45 4
38 5
34 p
6 32 0
8 30 12 28 24 27 j
above 24 25 Decision Dose =
REM E
L 8.
Using the above information and following table, determine the protective actions to be r
recocunended:
{
IF TitEN 7
a.
Projected Thyroid Dose (Item 6) less a.
NO ACTION than 5 rem i
a 9
.3
!j t,
7 15 AD 1827.12.7
(
DATA SHEET 2 (Continued) j.-
IF THEN
~
[] 7 b.
Projected Thyroid Dose greater than b.
EVACUATE 5 rem but less than 25 rem CHILDREN AND t
WOMEN OF CHILD-l}
BEARING AGE
\\*
IF POSSIBLE, i
SHELTER
- OTERS
- .) ;
c.
Projected Thyroid Dose greater than c.
EVACUATE IF 25 rem, but less than the POSSIBLE OR i I7 Decision Dose (Item 7)
OTHERWISE SHELTER *
't j ' ',
d.
Projected Thyroid Dose greater than d.
Perform action Ii Decision Dose, then as follows:
o
(
1.
If EEP less tnan Release 1.
EVACUATE 2
Duration
.j 2.
If EEP equal to Release 2.
SHELTER
- 4 Duration
'i 4
i
)
- SHELTER is to be with VENTILATION CONTROLLED.
1
.1
-i a
f e
n,. \\, )
j
,!_t END
- y
,-r, w -
.,w a
-+v
.- -~ ---
- - - + -
- ~ ~